Straightening device for automobile headrest rod

Abstract

The utility model belongs to the technical field of automobile headrest rod machining, and particularly relates to an automobile headrest rod straightening device which comprises an L-shaped plate, a straightening mechanism is arranged on the L-shaped plate, the straightening mechanism comprises an extrusion assembly and a fixing plate, the fixing plate is fixedly connected with the transverse side wall of the L-shaped plate, the fixing plate is connected with a cross plate through an arranged rotating assembly, and the cross plate is fixedly connected with the transverse side wall of the L-shaped plate. A group of first sliding grooves are formed in the cross plate, and first sliding blocks are slidably connected into the first sliding grooves, so that the problems that in the production process, if the quality of raw materials is unstable and indexes such as the strength and the toughness of steel do not meet the requirements, a rod piece is prone to bending in the machining and forming process, in addition, the machining process is unreasonable, and the machining cost is low are solved. The problems that in the prior art, in the working procedures of welding, cutting and the like, thermal stress generated by improper operation enables a rod piece to deform and needs to be straightened, but traditional straightening is time-consuming and labor-consuming, and straightening efficiency is prone to being affected are solved.

Description

Technical Field

[0001] This utility model belongs to the field of automotive headrest rod processing technology, specifically a straightening device for automotive headrest rods. Background Technology

[0002] The headrest rod is an important component of a car seat headrest, typically made of SAE 1010 steel or SAE 4340 alloy steel, and comes in various forms, including solid rods and hollow tubes. Its main function is to connect the headrest to the seat, ensuring the headrest's stability and safety. In the event of a collision, the headrest rod effectively supports the headrest, protecting the head and neck of the occupants and reducing injury. Furthermore, the headrest rod also incorporates the headrest's adjustment function, allowing occupants to adjust the headrest's height and position according to their height and comfort needs.

[0003] In existing technologies, if the quality of raw materials is unstable during the production process, such as the strength and toughness of steel not meeting the requirements, it can easily lead to bending of the rods during the processing and forming process. In addition, unreasonable processing technology, such as improper operation in welding, cutting and other processes, can cause thermal stress to deform the rods, requiring straightening. However, traditional straightening is time-consuming and labor-intensive, which can easily affect the straightening efficiency.

[0004] Therefore, this utility model provides a straightening device for automotive headrest rods. Utility Model Content

[0005] To address the shortcomings of existing technologies and solve the problem that unstable raw material quality, such as steel failing to meet strength and toughness requirements, can easily lead to bending of rods during processing and forming, and unreasonable processing techniques, such as improper operation during welding and cutting, can cause thermal stress that can deform rods, requiring straightening, but traditional straightening methods are time-consuming, labor-intensive, and easily affect straightening efficiency.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a straightening device for an automobile headrest rod, comprising an L-shaped plate, wherein a straightening mechanism is provided on the L-shaped plate, and the straightening mechanism includes:

[0007] An extrusion assembly includes a fixed plate fixed to the transverse sidewall of an L-shaped plate. A cross plate is connected to the fixed plate via a rotating assembly. A set of first sliding grooves is provided on the cross plate. A first sliding block is slidably connected in the first sliding groove. An L-shaped block is fixed to the sidewall of the first sliding block. Fixed blocks are fixed to both sides of the L-shaped block. An extrusion wheel is rotatably connected between the opposite sidewalls of a pair of fixed blocks via a first rotating shaft. A driving assembly is provided on the sidewall of the cross plate to drive the set of first sliding blocks to slide.

[0008] A push assembly, mounted on the base plate, is used to push the bolster rod.

[0009] Preferably, the drive assembly includes an annular groove formed in the side wall of the cross plate, a first rotating ring slidably connected in the annular groove, a square block fixed to the side wall of the first rotating ring, and connecting rods rotatably connected to the four corners of the side wall of the square block via a second rotating shaft.

[0010] Preferably, the other end of the connecting rod is rotatably connected to an isosceles block via a third rotating shaft. The isosceles block is fixed to the side wall of the first sliding block. A rectangular block is fixed to the top of the cross plate. An electric actuator is fixed to the bottom of the rectangular block. The telescopic end of the electric actuator is fixed to the L-shaped block.

[0011] Preferably, the pushing assembly includes a second sliding groove opened on one lateral end of an L-shaped plate, a sliding plate slidably connected in the second sliding groove, a pushing block fixedly connected to the side wall of the sliding plate, a pushing groove opened on the side wall of the pushing block, and a bolt threadedly connected to the pushing block through a pair of first threaded holes.

[0012] Preferably, a threaded rod is rotatably connected to the fixed plate through a rotating hole, and one end of the threaded rod is rotatably connected to the vertical side wall of the L-shaped plate. The sliding plate is threadedly connected to the threaded rod through a second threaded hole. A servo motor is fixedly connected to the side wall of the fixed plate through the L-shaped rod, and the output end of the servo motor is drivenly connected to the threaded rod.

[0013] Preferably, the rotating assembly includes a second rotating ring fixed to the side wall of the fixed plate, a toothed ring rotatably connected to the second rotating ring, the inner circular wall of the toothed ring being connected to the cross block through a pair of fixed rods, and a gear fixed to the threaded rod, the gear meshing with the toothed ring.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. The present invention discloses a straightening device for an automotive headrest rod. A drive assembly moves a set of sliding blocks, enabling a set of extrusion rollers to extrude and straighten the headrest rod by pushing the pusher rod. A rotating assembly rotates a cross plate, allowing the extrusion rollers to rotate simultaneously with the extrusion, improving the straightening effect. This addresses the problems in existing technologies where unstable raw material quality, such as substandard strength and toughness of steel, can lead to bending of the rod during processing. Furthermore, improper processing techniques, such as welding or cutting, can cause thermal stress that deforms the rod, necessitating straightening. However, traditional straightening methods are time-consuming, labor-intensive, and inefficient.

[0016] 2. The straightening device for a car headrest rod described in this utility model uses a gear and a toothed ring to mesh, which allows the threaded rod to drive the push block and the fixed headrest rod to move. The rotation of the toothed ring drives a set of extrusion rollers on the cross plate to rotate while extruding, thus straightening the headrest rod. The rotation and extrusion action of the extrusion rollers can apply force to the bent headrest rod, and more effectively restore it to a straight state. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a schematic diagram of the gear in this utility model;

[0020] Figure 3 This is a schematic diagram of the second rotating ring in this utility model;

[0021] Figure 4 This is a schematic diagram of the annular groove in this utility model;

[0022] Figure 5 yes Figure 2 Enlarged view of A in the middle;

[0023] In the diagram: 1. L-shaped plate; 2. Fixed plate; 3. Cross plate; 4. First sliding groove; 5. First sliding block; 6. L-shaped block; 7. Fixed block; 8. Extrusion wheel; 9. Annular groove; 10. First rotating ring; 11. Square block; 12. Connecting rod; 13. Isosceles block; 14. Rectangular block; 15. Electric actuator; 16. Second sliding groove; 17. Sliding plate; 18. Pushing block; 19. Pushing groove; 20. Threaded rod; 21. Servo motor; 22. Second rotating ring; 23. Gear ring; 24. Gear. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] like Figures 1 to 5As shown in the figure, a straightening device for a car headrest rod according to an embodiment of the present invention includes an L-shaped plate 1, on which a straightening mechanism is provided. The straightening mechanism includes: a pressing component, including a fixed plate 2 fixed to the transverse side wall of the L-shaped plate 1, a cross plate 3 connected to the fixed plate 2 via a rotating component, a set of first sliding grooves 4 on the cross plate 3, a first sliding block 5 slidably connected in the first sliding grooves 4, an L-shaped block 6 fixed to the side wall of the first sliding block 5, and fixed blocks 7 fixed to both sides of the L-shaped block 6. A pressing wheel 8 is rotatably connected between the opposite side walls of the pair of fixed blocks 7 via a first rotating shaft. A driving component is provided on the side wall of the cross plate 3 to drive the set of first sliding blocks 5 to slide; and a pushing component, which is provided on the base plate for pushing the headrest rod. During operation, the pushing component is used to push the headrest rod. The drive assembly can move a set of sliding blocks, enabling a set of extrusion rollers 8 to extrude and straighten the push rod of the push assembly. Furthermore, the rotating assembly can rotate the cross plate 3, allowing the extrusion rollers 8 to rotate simultaneously with the extrusion, improving the straightening effect of the push rod. This solves the problem in existing technologies where unstable raw material quality, such as steel with unsatisfactory strength and toughness, can easily lead to bending of the rod during processing. Additionally, unreasonable processing techniques, such as improper operation during welding and cutting, can cause thermal stress that deforms the rod, requiring straightening. However, traditional straightening methods are time-consuming, labor-intensive, and easily affect straightening efficiency.

[0026] The drive assembly includes an annular groove 9 on the side wall of the cross plate 3. A first rotating ring 10 is slidably connected in the annular groove 9. A square block 11 is fixed to the side wall of the first rotating ring 10. Each of the four corners of the side wall of the square block 11 is rotatably connected to a connecting rod 12 via a second rotating shaft. The other end of the connecting rod 12 is rotatably connected to an isosceles block 13 via a third rotating shaft. The isosceles block 13 is fixed to the side wall of the first sliding block 5. A rectangular block 14 is fixed to the top of the cross plate 3. An electric push rod 15 is fixed to the bottom of the rectangular block 14. The telescopic end of the electric push rod 15 is fixed to an L-shaped block 6. During operation, one of the L-shaped blocks 6 is moved by the push rod. Thus, through the movement of one L-shaped block 6, and through the linkage of a set of isosceles blocks 13, the first sliding block 5, and the connecting rod 12, a set of L-shaped blocks 6 are moved, allowing a set of extrusion wheels 8 to extrude and straighten the pillow rod. This process can accommodate pillow rods of different diameters.

[0027] The pushing assembly includes a second sliding groove 16 on one side of an L-shaped plate 1. A sliding plate 17 is slidably connected within the second sliding groove 16. A pushing block 18 is fixedly connected to the side wall of the sliding plate 17. A pushing groove 19 is provided on the side wall of the pushing block 18. Bolts are threadedly connected to the pushing block 18 through a pair of first threaded holes. A threaded rod 20 is rotatably connected to the fixed plate 2 through a rotating hole. One end of the threaded rod 20 is rotatably connected to the vertical side wall of the L-shaped plate 1. The sliding plate 17 is threadedly connected to the threaded rod 20 through the second threaded hole. A servo motor 21 is fixedly connected to the side wall of the fixed plate 2 through the L-shaped rod. The output end of the servo motor 21 is driven by the threaded rod 20. During operation, the pillow rod is fixed by a pair of bolts on the pushing block 18. The servo motor 21 drives the threaded rod 20 to rotate, causing the sliding plate 17 to slide. This pushes the push rod block to move, thus moving the pillow rod. A set of extrusion wheels 8 then extrudes the pillow rod, restoring it to a straight state.

[0028] The rotating assembly includes a second rotating ring 22 fixed to the side wall of the fixed plate 2. A toothed ring 23 is rotatably connected to the second rotating ring 22. The inner circular wall of the toothed ring 23 is connected to the cross block through a pair of fixed rods. A gear 24 is fixed to the threaded rod 20. The gear 24 meshes with the toothed ring 23. During operation, the meshing of the gear 24 and the toothed ring 23 allows the threaded rod 20 to drive the push block 18 and the fixed pillow rod to move. The rotation of the toothed ring 23 drives a set of extrusion wheels 8 on the cross plate 3 to rotate while extruding, which straightens the pillow rod. The rotation and extrusion of the extrusion wheels 8 can apply force to the bent headrest rod, which can more effectively restore it to a straight state.

[0029] Working Principle: The drive assembly moves a set of sliding blocks, allowing a set of extrusion rollers 8 to straighten the push rod of the push assembly. The rotating assembly rotates the cross plate 3, causing the extrusion rollers 8 to rotate simultaneously, improving the straightening effect. This solves the problem in existing technologies where unstable raw material quality (e.g., steel strength and toughness not meeting requirements) can lead to bending of the rod during processing. Furthermore, improper processing techniques, such as welding and cutting, can cause thermal stress that deforms the rod, requiring straightening. Traditional straightening methods are time-consuming, labor-intensive, and inefficient. The push rod moves one of the L-shaped blocks 6, which, through the movement of the L-shaped block 6, straightens the rod through a set of isosceles blocks 13 and the first sliding... The linkage between block 5 and connecting rod 12 causes a set of L-shaped blocks 6 to move, allowing a set of extrusion wheels 8 to extrude force onto the headrest rod, straightening it and adapting to headrest rods of different diameters. The headrest rod is fixed by a pair of bolts on push block 18. The servo motor 21 drives the threaded rod 20 to rotate, causing the sliding plate 17 to slide, which in turn pushes the push rod block to move, thus moving the headrest rod. The extrusion wheels 8 then extrude force onto the headrest rod, restoring it to a straight state. The engagement of gear 24 and gear ring 23 allows the threaded rod 20 to move the push block 18 and the fixed headrest rod. The rotation of the gear ring 23 causes the extrusion wheels 8 on the cross plate 3 to rotate while extruding, straightening the headrest rod. The rotation and extrusion action of the extrusion wheels 8 apply force to the bent headrest rod, more effectively restoring it to a straight state.

[0030] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A straightening device for a car headrest rod, comprising an L-shaped plate (1), characterized in that: The L-shaped plate (1) is provided with a straightening mechanism, which includes: The extrusion assembly includes a fixed plate (2) fixed to the transverse side wall of an L-shaped plate (1), a cross plate (3) connected to the fixed plate (2) by a rotating assembly, a set of first sliding grooves (4) on the cross plate (3), a first sliding block (5) slidably connected in the first sliding grooves (4), an L-shaped block (6) fixed to the side wall of the first sliding block (5), fixed blocks (7) fixed to both sides of the L-shaped block (6), an extrusion wheel (8) rotatably connected between the opposite side walls of a pair of fixed blocks (7) by a first rotating shaft, and a driving assembly for driving the set of first sliding blocks (5) to slide on the side wall of the cross plate (3). A push assembly, mounted on the base plate, is used to push the bolster rod.

2. A straightening device for a headrest rod of a vehicle as defined in claim 1, characterized in that: The drive assembly includes an annular groove (9) on the side wall of the cross plate (3), a first rotating ring (10) is slidably connected in the annular groove (9), a square block (11) is fixed to the side wall of the first rotating ring (10), and a connecting rod (12) is rotatably connected to the four corners of the side wall of the square block (11) through a second rotating shaft.

3. A straightening device for a headrest rod of a vehicle as defined in claim 2, characterized in that: The other end of the connecting rod (12) is rotatably connected to an isosceles block (13) via a third rotating shaft. The isosceles block (13) is fixed to the side wall of the first sliding block (5). A rectangular block (14) is fixed to the top of the cross plate (3). An electric push rod (15) is fixed to the bottom of the rectangular block (14). The telescopic end of the electric push rod (15) is fixed to the L-shaped block (6).

4. A straightening device for a headrest rod of a vehicle as defined in claim 3, characterized in that: The pushing assembly includes a second sliding groove (16) opened on one side of an L-shaped plate (1), a sliding plate (17) slidably connected in the second sliding groove (16), a pushing block (18) fixedly connected to the side wall of the sliding plate (17), a pushing groove (19) opened on the side wall of the pushing block (18), and a bolt threadedly connected to the pushing block (18) through a pair of first threaded holes.

5. A straightening device for a headrest rod of a vehicle as defined in claim 4, characterized in that: A threaded rod (20) is rotatably connected to the fixed plate (2) through a rotating hole, and one end of the threaded rod (20) is rotatably connected to the vertical side wall of the L-shaped plate (1). The sliding plate (17) is threadedly connected to the threaded rod (20) through a second threaded hole. A servo motor (21) is fixedly connected to the side wall of the fixed plate (2) through the L-shaped rod. The output end of the servo motor (21) is drivenly connected to the threaded rod (20).

6. A straightening device for a headrest rod of a vehicle as defined in claim 5, characterized in that: The rotating assembly includes a second rotating ring (22) fixed to the side wall of the fixed plate (2), a toothed ring (23) rotatably connected to the second rotating ring (22), the inner circular wall of the toothed ring (23) being connected to the cross block through a pair of fixed rods, and a gear (24) fixed to the threaded rod (20), the gear (24) meshing with the toothed ring (23).

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